Field sobriety walking test mat



FIG. 1 is a perspective view from the top, front and right side of a field sobriety walking test mat showing my new design; and,

FIG. 2 is a top plan view thereof.

The bottom surface, not shown, and the side surfaces are plain and unornamented.

The broken line, alternating long and short dash, in the middle of the field sobriety walking test mat forms part of the claimed design. 

The ornamental design for a field sobriety walking test mat, as shown and described. 